Abstract: A rotary joint for transferring melted plastic from at least one extruder to a plurality of molds of a rotary machine for molding preforms, the joint comprising a fixed structure (3?) provided with a fixed longitudinal element (23) therein, defining a longitudinal axis (Y), and a movable structure (3?) which can rotate about said axis (Y) and is adapted to be integrally fixed to the rotary machine; wherein a first passage channel (11) is provided within said fixed element (23); wherein a second passage channel (11?) is provided within said movable structure (3?) and coaxial to said first passage channel; said second passage channel (11?) being in communication at a first end thereof with said first passage channel (11), and being in communication at a second end thereof with a plurality of lateral radial channels (52) provided within said movable structure (3?); wherein there is provided, between the fixed structure (3?) and the movable structure (3?), a gap in which a spiral seal (24) is arranged for ensurin

Abstract: A device for biological purposes such as cell culturing, enzymatic reactions or filtering of fluid has a body with first and second surfaces. The body is delimited by a rim and an aperture in the center of the body. The aperture is covered at the first and second surface by first and second plates. The first and/or second plate has an inlet orifice allowing liquid medium into the aperture. Rotating means are arranged in the aperture between the first and second plate. At least one recessed portion is a cavity in the rim of the body having a first outlet orifice allowing the liquid medium to flow out of the body. At least one outlet channel connects the circular aperture with the recessed portion. Liquid is pumped into the aperture of the device and pumped through at least one outlet channel.

Abstract: In the case of a homogenizer device (100) for dispersing and/or homogenizing liquid to viscous substances, having a container (110) having one or more openings for introducing the substances to be processed, which has an opening for feeding the substances into a processing unit (120) in the central region of its bottom, which opening contains two gear rims (130, 140), which can be driven independent of one another, are disposed concentrically and configured in circular shape, and are separated from one another by way of a predetermined interstice, whereby the substances are guided from a central region, through the interstice, into a peripheral region of the gear rims, formation of cavitation is prevented, to the greatest possible extent, in that a conveyance device (150) is additionally provided in the processing unit (120), which device conveys the substances in the direction of the gear rims (130, 140), under pressure.

Abstract: A reactor vessel including: a mixing chamber having a vertical length, an upper inlet, and a lower outlet; and a vertically oriented paddle within the mixing chamber and having a cross-sectional shape of a hydrofoil, wherein the paddle moves with respect to the mixing chamber.

Abstract: A mixing unit and various applications of the mixing unit are described herein. The mixing unit includes: a stacked member in which three or more mixing elements are stacked; and a first plate and a second plate between which the stacked member is sandwiched and which are arranged opposite each other. In the mixing unit, the mixing elements have a plurality of first through holes, the second plate has an opening portion communicating with at least one of the first through holes in the mixing elements and the mixing elements are arranged such that part or all of the first through holes in one of the mixing elements communicate with other first through holes in the adjacent mixing element to allow fluid to be passed in a direction in which the mixing elements extend.

Abstract: An apparatus and system for stirring liquid inside a flow cell. In one implementation, the apparatus includes a rotatable disc configured to receive liquid at a top side of the disc and distribute the liquid substantially evenly around a periphery of the flow cell. The disc has a triangular cross sectional area. The apparatus may further include a set of fins attached to a bottom side of the disc, wherein the set of fins is configured to draw the liquid from the periphery of the flow cell into the center of the flow cell.

Abstract: A blending machine, for homogenizing materials deposited within an intermediate bulk container (IBC), includes: a frame; a drive motor; a clamp disk rotatably supported by the frame and coupled to the drive motor to drive disk rotation; first and second jaw clamps movably mounted to the frame; and a drive mechanism to drive the jaw clamps to translate toward each other and rotatably secure the IBC's boom to the rotatable clamp disk. A clutch, a torque limiter, and a limit switch limit the pressure applied by the clamps, and the extent of their travel to optimize clamping and rotatability. The blending machine is moveably mounted to a pedestal, and elevated by an actuator. A blending bar within the IBC is coupled through the boom to the clamp disk, and driven to rotate to blend the materials, in addition to mixing by rotation of the ICB.

Abstract: The present invention is directed to an in-line mixer for mixing a plurality of fluids to produce a mixed product. The mixer includes one or more mixing chambers, an impeller in each of the mixing chambers, one or more inlets coupled to injection valves for conveying the fluids into the mixing chamber, and an outlet for conveying the mixed product out of the mixing chamber. The in-line mixer is well suited to components, such as those used in making automotive OEM and refinish paints.

Abstract: The present invention is directed to an in-line mixer for mixing a plurality of fluids to produce a mixed product. The mixer includes one or more mixing chambers, an impeller in each of the mixing chambers, one or more inlets coupled to injection valves for conveying the fluids into the mixing chamber, and an outlet for conveying the mixed product out of the mixing chamber. The in-line mixer is well suited to components, such as those used in making automotive OEM and refinish paints.

Abstract: A method for manufacturing a reticular contact body element includes the process of manufacturing a rotating circular reticulate contact body element 4 by cutting and processing a synthetic resin fiber block that is formed by gluing the intersections of fiber yarn formed in the shape of a three-dimensional reticulum, cutting the synthetic resin fiber block to form fan shapes, making through holes 20 in the fan-shaped reticulate contact body element precursor, forming compression sections 25 by compressing the periphery 21 of the reticulate contact body element precursor and the circumferences of the through holes 20 with a hot press machine, hot-pressing the whole face of the reticulate contact body element precursor except its periphery 21 and the circumferences of the through holes 20 with the hot press machine at temperatures of 90-140° C.

Abstract: A gypsum slurry mixer includes a stationary part delimiting a mixing chamber including an upper part with a supply orifice, a lower part, a lateral part with an outlet orifice defining on the lateral part two end points and the outlet orifice is located within the angular sector formed by the centre of the stationary part and by the 2 points; a smooth movable part having an axis of rotation arranged in the stationary part; and an outlet system including a tubular element oriented tangentially to the stationary part along an axis of which the projection in a plane perpendicular to the axis of rotation is located within the sector formed by the acute angle between the projections, in the perpendicular plane, of the two tangents to the lateral part passing through the end points; and a collecting element.

Abstract: An apparatus and system for stirring liquid inside a flow cell. In one implementation, the apparatus includes a rotatable disc configured to receive liquid at a top side of the disc and distribute the liquid substantially evenly around a periphery of the flow cell. The disc has a triangular cross sectional area. The apparatus may further include a set of fins attached to a bottom side of the disc, wherein the set of fins is configured to draw the liquid from the periphery of the flow cell into the center of the flow cell.

Abstract: A method and apparatus is disclosed for maintaining fluid in suspension in a mixing tank including particles includes providing a reversible mixer, rotating the mixer in a normal direction in which particles buildup on the mixer, and, rotating the mixer in an abnormal direction to shed the particles from the mixer.

Abstract: According to the method of an aspect of the present invention, by forming the laminated body of the liquids by laminating a plurality of liquids after discharging the plurality of liquids from a central portion of the rotational stage onto the rotational stage and rotating the rotational stage after the formation, the centrifugal force by the rotation enables the laminated body to form a thin layer. Accordingly, because the diffusion between the layers can be executed rapidly in the latter mixing process, a mixing of liquids is allowed to advance immediately.

Abstract: The present invention relates to a multifunctional module comprising one or more units selected from the group consisting of reactor units, filter units, membrane units, reactor-separator units, clarificator units, purificator units, extractor units, and mixer units. The units are connected parallel or in series or both to each other, and each unit has at least one member having a surface, which surface is rotating with the member. The member is rotating around an axis making the unit operate under centrifugal force. One or more chambers for fluids are co-rotating with the rotating member. The present invention relates further to units which could be used in a spinning multifunctional module, and use of a spinning multifunctional module.

Abstract: An apparatus and system for stirring liquid inside a flow cell. In one implementation, the apparatus includes a rotatable disc configured to receive liquid at a top side of the disc and distribute the liquid substantially evenly around a periphery of the flow cell. The disc has a triangular cross sectional area. The apparatus may further include a set of fins attached to a bottom side of the disc, wherein the set of fins is configured to draw the liquid from the periphery of the flow cell into the center of the flow cell.

Abstract: The present invention includes an apparatus and method for narrowing the residence time distribution of a continuous stirred-tank reactor, or CSTR, which includes the optional procedures of: decreasing the vertical cross-sectional area of the reactor's agitator blades; decreasing the RPM of the agitator blades; and increasing the reactor's L/D ratio. The CSTR can be used in the production of monovinylidene aromatic polymers, such as high impact polystyrene.

Abstract: A machine (10) for mixing food products includes a motor (22) which turns a hollow shaft assembly (28) that carries an agitator (40). An assembly (70) for releasing the agitator (40) from the shaft assembly (28) includes a solenoid (71) which pivots an arm (74) that engages a plunger (80). The plunger (80) includes a pin (81) which is received in the hollow shaft assembly (28) and which engages the agitator (40) upon activation of the solenoid (71) to release the agitator (40) from the hollow shaft assembly (28).

Abstract: A machine (10) for mixing food products includes a motor (22) which turns a hollow shaft assembly (28) that carries an agitator (40). The agitator (40) has an I-beam shaped stem (41) with a blade (43) in the shape of the bowl of a spoon on one end of the stem (41). A socket (44) is formed at the other end of the stem (41) and has a bottom surface (45). An assembly (70) for releasing the agitator (40) from the shaft assembly (28) includes a solenoid (71) which pivots an arm (74) that engages a plunger (80). The plunger (80) includes a pin (81) which is received in the hollow shaft assembly (28) and which engages the bottom surface (45) of the socket (44) of the agitator (40) upon activation of the solenoid (71) to release the agitator (40) from the hollow shaft assembly (28).

Abstract: Disclosed is a method for producing a polyamide containing titanium dioxide pigments.

Abstract: It is an object of the present invention to provide an agitator equipped with a bottom paddle that has favorable agitation performance also in a streamline flow region of low Re number and to provide an agitation method.

Abstract: An apparatus for continuously producing polyester comprises three single reactors, i.e. a single esterification reactor (first reactor), a single initial polymerization reactor (second reactor) and a single final polymerization reactor (third reactor or final polymerizer), where at least one of the first reactor and the second reactor is free from an external stirring power source, or the third reactor is a horizontal, one-shaft-type, low speed rotation type reactor. Necessary number of reactors for the esterification and polycondensation reactions can be a minimum and necessary stirring power consumption for the reaction can be a minimum, and thus polyester polymers of good quality can be efficiently produced at a minimum energy cost in a necessary minimum reactor structure.

Abstract: A method of mixing two or more dissimilar fluids such a gas and a liquid is provided. The method includes the steps of introducing one fluid into the other to form a mixture, inducing cavitation in the mixture to reduce at least one of the fluids to a large number of relatively small units, and distributing the small units uniformly throughout the mixture. In a preferred embodiment, the step of inducing cavitation comprises introducing the mixture into a chamber having a rotating disk formed with a plurality of irregularities such as bores. The irregularities on the rotating disk induce cavitation in the mixture. The cavitation also breaks down van der Waals attractions within the mixture to enhance mixing.

Abstract: A dynamic mixer includes a housing structure having a mixing chamber, having an inlet opening through which a material or materials to be mixed is passed into the mixing chamber and an outlet. A mixer rod has mixing rod portion disposed in the housing structure and a plurality of mixing paddle portions each having a mixing surface.. The mixing rod is adapted for attachment to a drive unit which imparts a rotational mixing force to the rod.

Abstract: A device for the preparation of plastics material for recycling purposes has a container (1) with an upper inlet opening (10) for the material. In the container (1), at least one tool (14) rotates about the vertical container axis. This tool feeds the treated material through an outlet opening (17) which is arranged at the bottom of the container (1) and to which the housing (19) of at least one screw (21, 22) is connected. That side wall (28) of the feed opening (18) at which the tool (14) discharges defines a widening (36) extending continuously towards the screw axis. This widening (36) extends over part of the circumference of the screw turns (30) so that the screw-side edge of this widening (36) forms an uninterrupted shearing edge (39) co-operating with the screw turns (30).

Abstract: An agitation system for producing a slurry, mixture, or solution from addition of dry solids to a liquid is provided. A first tank has a first longitudinal axis, a static liquid level, a dynamic liquid level, and a holdup. A solid inlet is configured to feed dry solids into the first tank. A first drive shaft is disposed in the first tank generally along the first longitudinal axis and a first impeller is attached to the first drive shaft at a first location. The first impeller is configured to pump material in a generally upward direction. A second tank having a second longitudinal axis is in fluid communication with the first tank. A second drive shaft is disposed in the second tank generally along the second longitudinal axis and a second impeller is attached to the second drive shaft at a first location and a third impeller is attached to the second drive shaft at a second location.

Abstract: An apparatus configured for connection to a mixer for receiving a slurry and altering the flow characteristics of the slurry includes a conduit having a main inlet in slurry receiving communication with the mixer outlet and extending to a spout for discharging the slurry, at least one conduit restrictor associated with the conduit for creating back-pressure between the conduit restrictor and the mixer outlet for keeping the mixer full, and at least one pressure reducer associated with the discharge spout and configured for reducing the pressure of the slurry dispensed from the discharge spout. The apparatus is configured for maintaining a generally laminar flow from the mixer outlet to the discharge spout.

Abstract: According to a new partial stream method, different reagents (I, II) may be mixed quickly and intensively, especially for the production of emulsions, in a dispersing apparatus (10) which has a rotor/stator system (40, 50) at a container (B) near the bottom. A hot initial product, e.g. containing wax, may be dispersed with a dosed partial stream (R I?) of a cold carrier in a premixing chamber (60) via a feeding device (30, 38) below the rotor (50). The resulting mixture is then remixed with a cold main stream (R I) or a part hereof (R I?) fed from above. Contrary to the dispersing systems known, wherein mixing and shearing of the components is performed simultaneously in the region of maximum shearing gradient, the method of the invention separates both time and location of mixing and shearing by feeding said components into the premixing chamber (60). The basic principle is that an optimum emulsion be obtained by preparing a homogeneous phase mixture first.

Abstract: A device for preparing plastic material, in particular, thermoplastic material, comprises a receptacle (1) for the material, in which rotating tools (21) are provided to act onto the material which are supported by a support disc (9) and rotate about a vertical axis (8) of the receptacle (1). Driving of the support disc (9) is effected by a shaft (4) which passes through the bottom (3) of the receptacle (1) and is driven by a motor (5). The material is discharged from the receptacle (1) through a discharge opening (15) to which the housing (16) of a screw (17) is attached. The discharge opening (15) is provided within the same receptacle (1) and is situated below the path of rotation of the tools (21) and below the support disc (9). Additional moving tools (12) are provided within the same receptacle (1) below the support disc (9) which convey the material into the discharge opening (15).

Abstract: Mixing apparatus comprises a container and a mixing mechanism mounted within the container, the mechanism including a driven shaft and a mixing disc mounted on the shaft to be rotatable therewith, the shaft being hollow and having mounted thereon a plurality of axially spaced projections some at least of which are provided with a bore therethrough communicating between the interior of the container and the hollow interior of the shaft, the lower end of the shaft being closed, the upper end of the shaft being adapted for connection to a source of liquid external of the container, whereby said liquid can be supplied through the hollow interior of the shaft and through the bores in the projections into the interior of the container.

Abstract: A method and device for mixing a liquid with another substance are presented. The mixing is based on creation of a turbulent flow of the liquid, by providing curvilinear trajectories of the flow and providing a polymer material in the liquid flow.

Abstract: An apparatus configured for connection to a mixer for receiving a slurry and altering the flow characteristics of the slurry includes a conduit having a main inlet in slurry receiving communication with the mixer outlet and extending to a spout for discharging the slurry, at least one conduit restrictor associated with the conduit for creating back-pressure between the conduit restrictor and the mixer outlet for keeping the mixer full, and at least one pressure reducer associated with the discharge spout and configured for reducing the pressure of the slurry dispensed from the discharge spout. The apparatus is configured for maintaining a generally laminar flow from the mixer outlet to the discharge spout.

Abstract: A method of densifying a bulk particulate material includes at least partially confining the bulk particulate material, and rotating a rotatable member submerged under the bulk particulate material about an axis of rotation to cause movement of the material particles essentially towards or away from the axis or rotation, thereby to provide a densified bulk particulate material. The method is particularly suitable for densifying silica fume. The invention extends to apparatus for densifying a bulk particulate material.

Abstract: An apparatus and method for delivering an additive-enhanced slurry for use in making gypsum wallboard, and configured for connection to a centrifugal mixer with a tangential discharge outlet, includes a conduit having a main inlet in slurry receiving communication with the mixer outlet and extending to a discharge spout for discharging the slurry proximate a wallboard forming area. At least one volume restrictor is associated with the conduit for creating back pressure between the volume restrictor and the outlet for keeping the mixer fill, and at least one pressure reducer associated with the discharge spout and configured for reducing the pressure of the slurry dispensed from the discharge spout. The apparatus is configured for maintaining a generally laminar flow from the mixer outlet to the discharge spout.

Abstract: An apparatus and method for mixing at least two reactants is taught wherein a first reactant is delivered to a reaction zone through a first annular flow path and a second reactant is delivered to the reaction zone through a second annular flow path. The first and second annular flow paths are concentric with one another and the two reactants intermix with one another in the reaction zone. There is a rotating disc having a surface, defining one boundary of the reaction zone. The flow of the first and second reactants across the rotating disc and through the reaction zone is generally radial and has a residence time in the reaction zone of not more than about 100 msec, and preferably not more than about 50 msec. The reaction zone resides in a main reactor vessel and there is a driven agitator residing in the main reactor vessel to stir the contents thereof.

Abstract: An apparatus and method for mixing at least two reactants is taught wherein a first reactant is delivered to a reaction zone through a first annular flow path and a second reactant is delivered to the reaction zone through a second annular flow path. The first and second annular flow paths are concentric with one another and the two reactants intermix with one another in the reaction zone. There is a rotating disc having a surface, defining one boundary of the reaction zone. The flow of the first and second reactants across the rotating disc and through the reaction zone is generally radial and has a residence time in the reaction zone of not more than about 100 msec, and preferably not more than about 50 msec. The reaction zone resides in a main reactor vessel and there is a driven agitator residing in the main reactor vessel to stir the contents thereof.

Abstract: A method and device for mixing a liquid with another substance are presented. The mixing is based on creation of a turbulent flow of the liquid, by providing curvilinear trajectories of the flow and providing a polymer material in the liquid flow.

Abstract: An apparatus and method for blending dry comminuted materials which is particularly effective for comminuted materials having disparate physical properties such as density and particle size. The dry blending apparatus includes a substantially upright wall defining a blending enclosure, a feed mechanism for feeding dry comminuted materials into the blending enclosure, and a rotational distribution mechanism for distributing the dry comminuted materials onto the wall by causing the dry comminuted materials to fly outwardly by centrifugal force.

Abstract: A method is provided that can very rapidly produce a liquid silicone rubber base in which even microfine electrically conductive filler with specific surface of at least 0.5 m2/g will be homogeneously dispersed in liquid organopolysiloxane without small lump or clump formation. The method for the continuous preparation of liquid silicone rubber base, including the steps of continuously supplying to a continuous mixing apparatus (A) 100 weight parts polyorganosiloxane that has a viscosity at 25° C. of 100 to 500,000 mPa·s comprising at least 2 silicon-bonded alkenyl groups in each molecule, (B) 0 to 200 weight parts electrically nonconductive inorganic filler, and (C) 0.1 to 700 weight parts electrically conductive filler with a specific surface of at least 0.

Abstract: A device for mixing particulate material and liquid includes a container, an inlet for the introduction of particulate material into the container, a liquid spraying device for spraying liquid over the particulate material in the container, a disc agitator arranged in the container, and an outlet for discharging material mixed with liquid from the container. A fluidization device is provided to fluidize the particulate material in the container during the mixing operation. The inlet is arranged at one lengthwise side wall of the container, so as to extend along that wall. The outlet is arranged in the other lengthwise side wall, so as to extend along the wall.

Abstract: An apparatus for continuously tempering chocolate masses and the like includes at least one tempering column (1) including a plurality of liquid chambers (17). The liquid chambers (17) include tempering surfaces (18), and they are interconnected for the flow of a tempering medium. A plurality of mass chambers (7) is arranged between the tempering surfaces (18) of the liquid chambers (17). The liquid chambers (17) and the mass chambers (7) form a cylinder. A plurality of mixing tools (6) is provided, each mixing tool (6) being arranged in one of the mass chambers (7), and each mixing tool (6) being connected to a driving shaft (3). A plurality of mass passages (26) is provided, each mass passage (26) interconnecting two adjacent mass chambers (7) for the flow of the mass to be tempered. Each of the mass passages (26) has the shape of an annular gap being connected to and surrounding the driving shaft (3).

Abstract: An extruder for plasticizing and extruding a material. The extruder is formed from two interfitted orbital scroll members. Material, usually in a solid state, can be fed between the scroll members. As the scroll members are rotated eccentrically with respect to one another, the material is conveyed toward the center of the scroll members within a pocket of ever decreasing volume. This applies shear energy to the material which causes melting. Heaters can be provided in the scroll members to further aid and control the melting. By the time the material reaches the central output, it is in a molten state and can be extruded through an output. A method for extruding, and an injection molding machine using such an extruder to plasticize plastic resin, such as PET, is also described.

Abstract: A mixing apparatus for mixing delicate materials, has a rotor extending into a vessel for containing a quantity of material to be mixed, a support associated with the vessel, the mixing rotor mounted on the support for positioning in the vessel, the rotor comprising a rotatable shaft, a plurality of disc packs made up of a plurality of circular discs, each disc having an aperture in a center thereof, and means for mounting the discs on the shaft in axially spaced relation for enabling liquid to flow into the center of the discs and outward between the discs, and a motor drivingly connected to the rotor for rotating the rotor.

Abstract: Apparatus and process for continuously mixing liquid with powder, where the process uses an apparatus having a feed port for the introduction of liquid and powder on the top of a casing, a discharge outlet at the bottom of the casing, a rotating disk within the casing that divides the interior of the casing into upper and lower mixing compartments, scrapers on the upper surface of the rotating disk, and a rotating scraper positioned below the rotating disk that rotates independent from and without contacting the rotating disk.

Abstract: A method and apparatus is disclosed for controlled mixing or agitation of fluids and slurries using the generation and propagation of vortex rings. The vortex rings are generated from a generator plate. The novelties are a central drive shaft which moderates the behavior of the vortex rings, the driving of the generator plate through a drive spider from the drive shaft which can also moderate the behavior of the vortex rings, the addition of flexible generator plates to enhance the scope of mixing and material selection, the addition of contoured generator plates, and the addition of plate disruptors which permits the controlled dissemination vortex rings. Furthermore the use of a hollow drive shaft with selected orifices or nozzles permits the controlled introduction and extraction of material from the fluid being mixed while the apparatus is in motion. This also permits an agitation system which is basically self contained.

Abstract: A device for mixing particulate material and liquid comprises a container (1), an inlet (9) for the introduction of particulate material (P1) into the container (1), a spraying means (15, 16) for spraying liquid over the particulate material in the container, an agitator (17, 17', 22, 22') arranged in the container (1), and an outlet (10) for discharging material mixed with liquid from the container (1). A fluidization means (6, 12, 13, 14) is adapted to fluidize the particulate material in the container (1) during the mixing operation.

Abstract: A materials mixer, suitable for mixing concrete, comprises a generally cylindrical housing (10) which houses a mixing chamber (15) consisting of an upper, dry mixing chamber portion (2), a central, wet mixing chamber portion (3) and a lower, discharge chamber portion (4). The materials mixer has an entrance (20) for materials to be mixed and an exit (25) for the complete mixture, between which are a plurality of rotating members (30, 40, 50, 60) which disrupt the flow of materials through the chamber (15) causing mixing of the materials. The shape of the mixing chamber is defined by a plurality of baffle plates (11, 12, 16) which help determine the path of the materials though the chamber.

Abstract: A blender blade having a bottom wavy or undulate configuration for blending ingredients in a blender and a top aerating blade. The wavy blade stirs ingredients into the mixture, rather than chopping and grinding the ingredients, thereby retaining the ingredients integrity. The top blade pulls ingredients and air into the mixture to be mixed. The resultant mixture has a heterogenous, rather and homogenous, textured consistency.

Abstract: A continuous mixer has an elongated trough with two mixer assemblies mounted therein in a mutually parallel, laterally spaced apart relationship for axial rotation in opposite directions. Each mixer assembly has a rigid shaft with a plurality of blades mounted thereon which are shaped and mutually arranged to achieve an intersecting helical effect in the trough. The blades are arranged in sets of at least two, axially adjacent ones of said blades, wherein the blades within each set has a substantially identical circumferential position on its shaft, and the sets are positioned in a circumferentially staggered pattern about the shaft to axially balance the mixing assemblies, and thereby alleviate vibration, even during high speed mixing. Counterbalance weights or eccentric blades on the shafts can also be used to improve the dynamic balance of the mixing assemblies.

Abstract: A developer dispersing device which can be utilized for moving dry two-component toner is applicable to electro-photographic apparatuses such as copiers, printers or facsimile machines. The developer dispersing device includes a rotatable shaft on which pumping plate members and blades are positioned so as to both laterally and radially move toner. The pumping plate member and blades are positioned on the shaft to permit an efficient lateral and radial displacement of the toner in combination with positively mixing newly supplied toner with stock toner so as to provide for an even image density.